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Recent content by quasimodo
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820-01987-A - 20V - chime - shuts off - looping
for the machine game over?- quasimodo
- Post #11
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
chimes every reboot...- quasimodo
- Post #9
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
completely, backlight is turning on- quasimodo
- Post #8
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
revive did go trough, but again...looping...- quasimodo
- Post #6
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
yes, dfu is detected. running revive now.- quasimodo
- Post #5
- Forum: Macbook Logic Board Repair Questions
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820-3476-A - ppbus_g3h 4V
figured it out. louis helped me.. and i forgot to put the 0 ohm resistor...- quasimodo
- Post #2
- Forum: Macbook Logic Board Repair Questions
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820-3476-A - ppbus_g3h 4V
hey guys, machine came in like this (see photo). ppbus around 1v. rest of the board looking good. replaced all affected components, replaced u7100 -> now ppbus is 4v not stable chgr a/l gate is 0.02v? chgr_ugate is 5v dcin is good / 16v. what to do?- quasimodo
- Thread
- Replies: 2
- Forum: Macbook Logic Board Repair Questions
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820-01069-B - iMac 21,5" - 2017 - no diagnostic lights
removed CMOS cell. nothing. no schematic for the board. You have something?- quasimodo
- Post #3
- Forum: Macbook Logic Board Repair Questions
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820-01069-B - iMac 21,5" - 2017 - no diagnostic lights
Hey guys, 820-01069-B - not a single light is on. Changed PSU. nothing. Whats going on here?- quasimodo
- Thread
- Replies: 3
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
Nop. Backlight is coming on and then the machine is turning off instantly. DFU at all possible at that state? Data would be nice...- quasimodo
- Post #3
- Forum: Macbook Logic Board Repair Questions
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820-01987-A - 20V - chime - shuts off - looping
Hey guys, 820-01987-A - no liquid damage. Machine starts, chimes and shuts off directly. Looping. What to do? Whats wrong here?- quasimodo
- Thread
- Replies: 11
- Forum: Macbook Logic Board Repair Questions
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A2141 - no update / fresh install / only catalina
tried everything / internet / from boot-usb / dfu restore Just a message is coming up "update failed" at end of installation- quasimodo
- Post #7
- Forum: Macbook Logic Board Repair Questions
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A2141 - no update / fresh install / only catalina
no ideas?- quasimodo
- Post #5
- Forum: Macbook Logic Board Repair Questions
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A2141 - no update / fresh install / only catalina
catalina is going through. but no other system...- quasimodo
- Post #4
- Forum: Macbook Logic Board Repair Questions
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A2141 - no update / fresh install / only catalina
i know that... i want to update the system. but not possible.- quasimodo
- Post #3
- Forum: Macbook Logic Board Repair Questions